Norway country information

Common names: Blåmage, Svarthå
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Reported from Finmark (Ref. 43202) and the Norwegian deep (Ref. 82399).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/no.html
National Fisheries Authority: http://odin.dep.no/fid/eng/
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Sagre commun, Negrito, قِرش فانوس شائع, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Etmopteridae (Lantern sharks)
Etymology: Etmopterus: Greek, ethmos, -ou = sieve or ethmoides bone + Greek, pteron = wing, fin (Ref. 45335).
More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; depth range 70 - 2490 m (Ref. 106604), usually 200 - 500 m (Ref. 128537). Deep-water; 73°N - 38°S, 40°W - 36°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: Iceland, Norway, and the western Mediterranean to Morocco, Senegal, Sierra Leone, Côte d'Ivoire to Nigeria, Cameroon to Gabon, Azores, Cape Verde, and Cape Province, South Africa (Ref. 247).

Length at first maturity / Size / Weight / Age

Maturity: L_m 34.5, range 33 - 36 cm
Max length : 60.0 cm TL male/unsexed; (Ref. 247); common length : 45.0 cm TL male/unsexed; (Ref. 247); max. published weight: 850.00 g (Ref. 40637)

Found on the outer continental shelves and upper slopes. Feeds on small fishes, squids, and crustaceans. Ovoviviparous, with number of young from 6 to 20 in a litter. Utilized for fishmeal and prepared dried salted for human consumption. Depth range reported at 70m-2000m in Ref. 35388.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Red List Status (Ref. 130435)

Vulnerable (VU) (A2bd); Date assessed: 31 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

FAO(Fisheries: production; publication : search) | FishSource | Sea Around Us

More information

Trophic ecology
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Preferred temperature (Ref. 115969): 5.8 - 14.2, mean 9.2 (based on 392 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00339 (0.00284 - 0.00404), b=3.06 (3.01 - 3.11), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 4.1 ±0.2 se; based on diet studies.

Resilience (Ref. 120179): Very Low, minimum population doubling time more than 14 years (Fec=6).

Fishing Vulnerability (Ref. 59153): High vulnerability (63 of 100).

Climate Vulnerability (Ref. 125649): Low vulnerability (13 of 100).

Price category (Ref. 80766): Unknown.

Etmopterus spinax (Linnaeus, 1758)